Open reader overlay while error with long message is shown

src/modules/reader/screens/Reader.tsx

@@ -287,6 +287,9 @@ const BaseReader = ({
                         <Box
                             onClick={() => setIsOverlayVisible(!isOverlayVisible)}
                             sx={{
+                                position: 'fixed',
+                                top: 0,
+                                left: 0,
                                 width: '100vw',
                                 height: '100vh',
                                 background: 'transparent',